Pipe wrench or clamp.



PATENTBD DEC. 15, 1903;

C. N. HUTGHINS.

PIPE WRENCH 0R CLAMP.

APPLICATION FILED MAY 5. 1903.

NO MODEL.

UNITED STATEs Patented December 15., 1903.

PATENT OFFICE.

PIPE WRENCH on CLAMIP;

SPECIFICATION forming part Of Letters Patent NO. 746,705, dated December15, 1903. Application tiled May 5, 1903. Slerial No. 155,775. [Nomodel.)

To all whom it may concern:

Be it known that LCHARLES N. HUTCHINS,

acitizen of the United States, residing atv Pipe-VV'rench or Pipe-Clamp,of which the following is a specification.

My invention relates to improvements inv pipe-wrenches or pipe-clampswith which pipe may be clamped and held securely; and the objects of myimprovements are, first, to provide a pipe-wrench or pipe-clamp withwhich pipe may be instantly clamped with the jaws of the wrench andraised, lowered, turned, or released, as required; second, to providefacilities for the necessary adjustment of the said jaws, I attain theseobjects by the mechanism illustrated in the accompanying drawings, inwhich Figure 1 is a side view showing the jaws locked together, the openposition of the latch being indicated in dotted outline. Fig. 2 is anend view looking at the jaw end. The dotted lines show wrench or clampas it appears when about to be opened.

The numerals marked thereon indicate the different parts, similarnumerals referring to similar parts throughout. g

1 and 2 are the jaws of the wrench or clamp, the same beingmade with acurve to correspond with each other in the well-known pipeclampstyle,the shape of the opening between the jaws when same are placedtogether being somewhat oblong to better fit diiferentsized pipes whenjaws are applied to same.

3 is a screw used to connect jaws l and 2' together at their inner ends.Said screw is flattened at one end to allow same to be pivoted to jaw 2,the opposite end of the screw being screwed through jaw 1, thusconnecting the jaws and providing adjustment for the same, as screw 3can be turned in or out/when the straps (which will be referred tohereiuafter) are swung off from the end of jaw 1. as shown in dottedlines in the drawings.

4 and 4 are two steel straps used to connect jaw 2 and lever 5, (whichwill be referred to later,).the said straps being pivoted one end ofeach to opposite sides of'jaw 2 at the end opposite from the pivotconnection between jaw 2 and connecting-screw 3, the other ends of saidstraps 4 and 4 being pivoted in like manner, thus hinging jaw 2 andlever 5 to- 1, so. that the straps 4 and 4 may be swung over the end ofjaw l and lever 5 pressed down over fulcrum 6, (which will be referredto hereinafter,) the pivot through straps 4 and 4 and the end of lever 5passing slightly over fulcrum 6, thus providing the required grip andsecurely locking the wrench or clamp. I

6 is a screw through the end of lever 5 and is set so as to formthefulcrum for the said lever and acts on the end of jaw 1 when straps 4and 4 are swung over theend of same and lever 5 is pressed down, thescrew or fulcrum 6 being adjustable, thus furnishing the required gripto the wrench or clamp.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination in a 'pipe wrench or clamp of two gripping-jawshaving a screw connection at their ends, the said screw having a pivotconnection with'one jaw and threaded connection with the other, meanslocated at the opposite ends of the jaws forlocking the jaws togetherand a handle or shankrigidly attached to one of the jaws, allsubstantially as set forth.

, 2. In a pipe wrench or clamp the combination with a handle orshankoftwo grippingjaws, one jaw being rigid with the handle and insubstantial alinement therewith, the other jaw having pivotal connectionwith the bandle, a hinged locking-lever having link connection with theopposite end of the pivoted jaw, and the said lever having an adjustablefulcrum, substantialy as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

O. N. HU'IOHINS.

Witnesses: J. W. MARTIN,

G. A. KELLNER.

